Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859569 | Optical recording medium | Sumio Hirose, Hiroshi Ozawa, Kenji Abe, Yoichi Hosono, Shigeru Takahara | 1989-08-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859569 | Optical recording medium | Sumio Hirose, Hiroshi Ozawa, Kenji Abe, Yoichi Hosono, Shigeru Takahara | 1989-08-22 |